Portable seat cushion



FIG. 1 is an perspective view of my new design for a portable seatcushion;

FIG. 2 is an end elevational view thereof, the opposite side being amirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is an right side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an left side elevational view thereof.

The ornamental design for a portable seat cushion, as shown anddescribed.